25517485270 has 32 divisors (see below), whose sum is σ = 47011976352. Its totient is φ = 9967007232.

The previous prime is 25517485267. The next prime is 25517485303. The reversal of 25517485270 is 7258471552.

It is a happy number.

It is a super-2 number, since 2×25517485270² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25517485270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2864944 + ... + 2873836.

It is an arithmetic number, because the mean of its divisors is an integer number (1469124261).

Almost surely, 2^25517485270 is an apocalyptic number.

25517485270 is a deficient number, since it is larger than the sum of its proper divisors (21494491082).

25517485270 is a wasteful number, since it uses less digits than its factorization.

25517485270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15616.

The product of its (nonzero) digits is 784000, while the sum is 46.

The spelling of 25517485270 in words is "twenty-five billion, five hundred seventeen million, four hundred eighty-five thousand, two hundred seventy".