25420866946 has 32 divisors (see below), whose sum is σ = 40604078592. Its totient is φ = 11915009280.

The previous prime is 25420866929. The next prime is 25420866953. The reversal of 25420866946 is 64966802452.

It is a super-3 number, since 3×25420866946³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25420866893 and 25420866902.

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, 496330 + ... + 545146.

It is an arithmetic number, because the mean of its divisors is an integer number (1268877456).

Almost surely, 2^25420866946 is an apocalyptic number.

25420866946 is a deficient number, since it is larger than the sum of its proper divisors (15183211646).

25420866946 is a wasteful number, since it uses less digits than its factorization.

25420866946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49114.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 25420866946 in words is "twenty-five billion, four hundred twenty million, eight hundred sixty-six thousand, nine hundred forty-six".