25315511145012 has 108 divisors (see below), whose sum is σ = 70350246366400. Its totient is φ = 7670064013920.

The previous prime is 25315511144993. The next prime is 25315511145013. The reversal of 25315511145012 is 21054111551352.

25315511145012 is a `hidden beast` number, since 2 + 5 + 31 + 5 + 5 + 1 + 114 + 501 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315511145013) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25309989 + ... + 26291187.

Almost surely, 2^{25315511145012} is an apocalyptic number.

25315511145012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25315511145012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35175123183200).

25315511145012 is an abundant number, since it is smaller than the sum of its proper divisors (45034735221388).

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

25315511145012 is a wasteful number, since it uses less digits than its factorization.

25315511145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987154 (or 987138 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 36.

Adding to 25315511145012 its reverse (21054111551352), we get a palindrome (46369622696364).

The spelling of 25315511145012 in words is "twenty-five trillion, three hundred fifteen billion, five hundred eleven million, one hundred forty-five thousand, twelve".