1425923540 has 12 divisors (see below), whose sum is σ = 2994439476. Its totient is φ = 570369408.

The previous prime is 1425923509. The next prime is 1425923549. The reversal of 1425923540 is 453295241.

It can be written as a sum of positive squares in 2 ways, for example, as 477160336 + 948763204 = 21844^2 + 30802^2 .

It is a super-2 number, since 2×1425923540² = 4066515883852263200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1425923540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425923549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35648069 + ... + 35648108.

It is an arithmetic number, because the mean of its divisors is an integer number (249536623).

Almost surely, 2^1425923540 is an apocalyptic number.

1425923540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425923540 is an abundant number, since it is smaller than the sum of its proper divisors (1568515936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425923540 is a wasteful number, since it uses less digits than its factorization.

1425923540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71296186 (or 71296184 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1425923540 is about 37761.4027811468. The cubic root of 1425923540 is about 1125.5516083397.

The spelling of 1425923540 in words is "one billion, four hundred twenty-five million, nine hundred twenty-three thousand, five hundred forty".