25122774890 has 32 divisors (see below), whose sum is σ = 47649150720. Its totient is φ = 9510588864.

The previous prime is 25122774889. The next prime is 25122774959. The reversal of 25122774890 is 9847722152.

It is a super-2 number, since 2×25122774890² (a number of 22 digits) contains 22 as substring.

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, 123119 + ... + 255741.

It is an arithmetic number, because the mean of its divisors is an integer number (1489035960).

Almost surely, 2^25122774890 is an apocalyptic number.

25122774890 is a deficient number, since it is larger than the sum of its proper divisors (22526375830).

25122774890 is a wasteful number, since it uses less digits than its factorization.

25122774890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133646.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 25122774890 in words is "twenty-five billion, one hundred twenty-two million, seven hundred seventy-four thousand, eight hundred ninety".