25988073652 has 6 divisors (see below), whose sum is σ = 45479128898. Its totient is φ = 12994036824.

The previous prime is 25988073647. The next prime is 25988073767. The reversal of 25988073652 is 25637088952.

It can be written as a sum of positive squares in only one way, i.e., 20665787536 + 5322286116 = 143756^2 + 72954^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25988073593 and 25988073602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248509203 + ... + 3248509210.

Almost surely, 2^25988073652 is an apocalyptic number.

It is an amenable number.

25988073652 is a deficient number, since it is larger than the sum of its proper divisors (19491055246).

25988073652 is a wasteful number, since it uses less digits than its factorization.

25988073652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497018417 (or 6497018415 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 25988073652 in words is "twenty-five billion, nine hundred eighty-eight million, seventy-three thousand, six hundred fifty-two".