25450462478 has 32 divisors (see below), whose sum is σ = 44315071488. Its totient is φ = 10736409600.

The previous prime is 25450462451. The next prime is 25450462511. The reversal of 25450462478 is 87426405452.

It is a Curzon number.

It is a congruent number.

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, 606926 + ... + 647502.

It is an arithmetic number, because the mean of its divisors is an integer number (1384845984).

Almost surely, 2^25450462478 is an apocalyptic number.

25450462478 is a deficient number, since it is larger than the sum of its proper divisors (18864609010).

25450462478 is a wasteful number, since it uses less digits than its factorization.

25450462478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41288.

The product of its (nonzero) digits is 2150400, while the sum is 47.

The spelling of 25450462478 in words is "twenty-five billion, four hundred fifty million, four hundred sixty-two thousand, four hundred seventy-eight".