25121464870 has 48 divisors (see below), whose sum is σ = 46842969600. Its totient is φ = 9699346944.

The previous prime is 25121464831. The next prime is 25121464871. The reversal of 25121464870 is 7846412152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121464871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1731406 + ... + 1745854.

It is an arithmetic number, because the mean of its divisors is an integer number (975895200).

Almost surely, 2^25121464870 is an apocalyptic number.

25121464870 is a deficient number, since it is larger than the sum of its proper divisors (21721504730).

25121464870 is a wasteful number, since it uses less digits than its factorization.

25121464870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14657 (or 14620 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 25121464870 in words is "twenty-five billion, one hundred twenty-one million, four hundred sixty-four thousand, eight hundred seventy".