402052250025 has 60 divisors (see below), whose sum is σ = 746078896332. Its totient is φ = 214042296960.

The previous prime is 402052250021. The next prime is 402052250059. The reversal of 402052250025 is 520052250204.

402052250025 is a `hidden beast` number, since 402 + 0 + 5 + 2 + 250 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 162106085376 + 239946164649 = 402624^2 + 489843^2 .

It is not a de Polignac number, because 402052250025 - 2² = 402052250021 is a prime.

It is a super-2 number, since 2×402052250025² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402052250021) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 949699 + ... + 1306151.

Almost surely, 2^402052250025 is an apocalyptic number.

402052250025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402052250025 is a deficient number, since it is larger than the sum of its proper divisors (344026646307).

402052250025 is a wasteful number, since it uses less digits than its factorization.

402052250025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357032 (or 357018 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The spelling of 402052250025 in words is "four hundred two billion, fifty-two million, two hundred fifty thousand, twenty-five".