25235413652 has 6 divisors (see below), whose sum is σ = 44161973898. Its totient is φ = 12617706824.

The previous prime is 25235413607. The next prime is 25235413657. The reversal of 25235413652 is 25631453252.

It can be written as a sum of positive squares in only one way, i.e., 25129858576 + 105555076 = 158524^2 + 10274^2 .

It is a super-2 number, since 2×25235413652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25235413657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154426703 + ... + 3154426710.

It is an arithmetic number, because the mean of its divisors is an integer number (7360328983).

Almost surely, 2^25235413652 is an apocalyptic number.

It is an amenable number.

25235413652 is a deficient number, since it is larger than the sum of its proper divisors (18926560246).

25235413652 is a wasteful number, since it uses less digits than its factorization.

25235413652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6308853417 (or 6308853415 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

The spelling of 25235413652 in words is "twenty-five billion, two hundred thirty-five million, four hundred thirteen thousand, six hundred fifty-two".