25457771285670 has 192 divisors, whose sum is σ = 66145491191808. Its totient is φ = 6260433984000.

The previous prime is 25457771285657. The next prime is 25457771285689. The reversal of 25457771285670 is 7658217775452.

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, 70321825 + ... + 70682915.

It is an arithmetic number, because the mean of its divisors is an integer number (344507766624).

Almost surely, 2^{25457771285670} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25457771285670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33072745595904).

25457771285670 is an abundant number, since it is smaller than the sum of its proper divisors (40687719906138).

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

25457771285670 is a wasteful number, since it uses less digits than its factorization.

25457771285670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361259 (or 361216 counting only the distinct ones).

The product of its (nonzero) digits is 230496000, while the sum is 66.

The spelling of 25457771285670 in words is "twenty-five trillion, four hundred fifty-seven billion, seven hundred seventy-one million, two hundred eighty-five thousand, six hundred seventy".