25552642445 has 32 divisors (see below), whose sum is σ = 33695778816. Its totient is φ = 18447912000.

The previous prime is 25552642439. The next prime is 25552642463. The reversal of 25552642445 is 54424625552.

It is not a de Polignac number, because 25552642445 - 2¹⁴ = 25552626061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25552642396 and 25552642405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9652112 + ... + 9654758.

It is an arithmetic number, because the mean of its divisors is an integer number (1052993088).

Almost surely, 2^25552642445 is an apocalyptic number.

It is an amenable number.

25552642445 is a deficient number, since it is larger than the sum of its proper divisors (8143136371).

25552642445 is a wasteful number, since it uses less digits than its factorization.

25552642445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its digits is 1920000, while the sum is 44.

The spelling of 25552642445 in words is "twenty-five billion, five hundred fifty-two million, six hundred forty-two thousand, four hundred forty-five".