25670145690 has 96 divisors (see below), whose sum is σ = 80763920640. Its totient is φ = 5522314752.

The previous prime is 25670145679. The next prime is 25670145733. The reversal of 25670145690 is 9654107652.

25670145690 is a `hidden beast` number, since 2 + 5 + 6 + 70 + 14 + 569 + 0 = 666.

It is a super-2 number, since 2×25670145690² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1187710 + ... + 1209129.

It is an arithmetic number, because the mean of its divisors is an integer number (841290840).

Almost surely, 2^25670145690 is an apocalyptic number.

25670145690 is an abundant number, since it is smaller than the sum of its proper divisors (55093774950).

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

25670145690 is a wasteful number, since it uses less digits than its factorization.

25670145690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396876 (or 2396873 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 25670145690 in words is "twenty-five billion, six hundred seventy million, one hundred forty-five thousand, six hundred ninety".