25227043478 has 48 divisors (see below), whose sum is σ = 50193216864. Its totient is φ = 9392866560.

The previous prime is 25227043477. The next prime is 25227043483. The reversal of 25227043478 is 87434072252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25227043477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560738 + ... + 604053.

It is an arithmetic number, because the mean of its divisors is an integer number (1045692018).

Almost surely, 2^25227043478 is an apocalyptic number.

25227043478 is a deficient number, since it is larger than the sum of its proper divisors (24966173386).

25227043478 is a wasteful number, since it uses less digits than its factorization.

25227043478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164837 (or 1164830 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 44.

The spelling of 25227043478 in words is "twenty-five billion, two hundred twenty-seven million, forty-three thousand, four hundred seventy-eight".