25532217556 has 24 divisors (see below), whose sum is σ = 47038944960. Its totient is φ = 12092688000.

The previous prime is 25532217547. The next prime is 25532217559. The reversal of 25532217556 is 65571223552.

It is a super-2 number, since 2×25532217556² (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 (25532217559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792156 + ... + 823756.

It is an arithmetic number, because the mean of its divisors is an integer number (1959956040).

Almost surely, 2^25532217556 is an apocalyptic number.

It is an amenable number.

25532217556 is a deficient number, since it is larger than the sum of its proper divisors (21506727404).

25532217556 is a wasteful number, since it uses less digits than its factorization.

25532217556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42255 (or 42253 counting only the distinct ones).

The product of its digits is 630000, while the sum is 43.

The spelling of 25532217556 in words is "twenty-five billion, five hundred thirty-two million, two hundred seventeen thousand, five hundred fifty-six".