425561445 has 20 divisors (see below), whose sum is σ = 762859020. Its totient is φ = 226965888.

The previous prime is 425561443. The next prime is 425561447. The reversal of 425561445 is 544165524.

It is an interprime number because it is at equal distance from previous prime (425561443) and next prime (425561447).

It can be written as a sum of positive squares in 2 ways, for example, as 336428964 + 89132481 = 18342^2 + 9441^2 .

It is not a de Polignac number, because 425561445 - 2¹ = 425561443 is a prime.

It is a super-2 number, since 2×425561445² = 362205086940976050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425561443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 524980 + ... + 525789.

It is an arithmetic number, because the mean of its divisors is an integer number (38142951).

Almost surely, 2^425561445 is an apocalyptic number.

425561445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425561445 is a deficient number, since it is larger than the sum of its proper divisors (337297575).

425561445 is a wasteful number, since it uses less digits than its factorization.

425561445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050786 (or 1050777 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 425561445 is about 20629.1406752681. The cubic root of 425561445 is about 752.1782276414.

The spelling of 425561445 in words is "four hundred twenty-five million, five hundred sixty-one thousand, four hundred forty-five".