25055531289936 has 480 divisors, whose sum is σ = 87437747376000. Its totient is φ = 6840598044672.

The previous prime is 25055531289883. The next prime is 25055531289941. The reversal of 25055531289936 is 63998213555052.

25055531289936 is a `hidden beast` number, since 2 + 5 + 0 + 5 + 5 + 531 + 2 + 8 + 9 + 93 + 6 = 666.

It is a super-3 number, since 3×25055531289936³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59335195 + ... + 59755973.

It is an arithmetic number, because the mean of its divisors is an integer number (182161973700).

Almost surely, 2^{25055531289936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25055531289936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43718873688000).

25055531289936 is an abundant number, since it is smaller than the sum of its proper divisors (62382216086064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25055531289936 is a wasteful number, since it uses less digits than its factorization.

25055531289936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420936 (or 420917 counting only the distinct ones).

The product of its (nonzero) digits is 87480000, while the sum is 63.

The spelling of 25055531289936 in words is "twenty-five trillion, fifty-five billion, five hundred thirty-one million, two hundred eighty-nine thousand, nine hundred thirty-six".