20951012625 has 128 divisors (see below), whose sum is σ = 37806912000. Its totient is φ = 10270540800.

The previous prime is 20951012573. The next prime is 20951012647. The reversal of 20951012625 is 52621015902.

It is not a de Polignac number, because 20951012625 - 2¹³ = 20951004433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41160871 + ... + 41161379.

It is an arithmetic number, because the mean of its divisors is an integer number (295366500).

Almost surely, 2^20951012625 is an apocalyptic number.

20951012625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20951012625 is a deficient number, since it is larger than the sum of its proper divisors (16855899375).

20951012625 is a wasteful number, since it uses less digits than its factorization.

20951012625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 20951012625 in words is "twenty billion, nine hundred fifty-one million, twelve thousand, six hundred twenty-five".