25294344690 has 32 divisors (see below), whose sum is σ = 60736879296. Its totient is φ = 6741775040.

The previous prime is 25294344689. The next prime is 25294344697. The reversal of 25294344690 is 9644349252.

It is a super-2 number, since 2×25294344690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25294344697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150381 + ... + 270560.

It is an arithmetic number, because the mean of its divisors is an integer number (1898027478).

Almost surely, 2^25294344690 is an apocalyptic number.

25294344690 is an abundant number, since it is smaller than the sum of its proper divisors (35442534606).

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

25294344690 is a wasteful number, since it uses less digits than its factorization.

25294344690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422954.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 25294344690 in words is "twenty-five billion, two hundred ninety-four million, three hundred forty-four thousand, six hundred ninety".