425554425 has 24 divisors (see below), whose sum is σ = 781760480. Its totient is φ = 226962000.

The previous prime is 425554399. The next prime is 425554429. The reversal of 425554425 is 524455524.

425554425 is a `hidden beast` number, since 42 + 55 + 544 + 25 = 666.

It is not a de Polignac number, because 425554425 - 2⁸ = 425554169 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 425554425.

It is not an unprimeable number, because it can be changed into a prime (425554429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314551 + ... + 315900.

Almost surely, 2^425554425 is an apocalyptic number.

425554425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425554425 is a deficient number, since it is larger than the sum of its proper divisors (356206055).

425554425 is a wasteful number, since it uses less digits than its factorization.

425554425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630470 (or 630459 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The square root of 425554425 is about 20628.9705269071. The cubic root of 425554425 is about 752.1740916776.

The spelling of 425554425 in words is "four hundred twenty-five million, five hundred fifty-four thousand, four hundred twenty-five".