25463029949 has 24 divisors (see below), whose sum is σ = 31011327360. Its totient is φ = 20475791712.

The previous prime is 25463029903. The next prime is 25463030017. The reversal of 25463029949 is 94992036452.

It is a de Polignac number, because none of the positive numbers 2^k-25463029949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25463029949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25466029949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211367 + ... + 309195.

It is an arithmetic number, because the mean of its divisors is an integer number (1292138640).

Almost surely, 2^25463029949 is an apocalyptic number.

It is an amenable number.

25463029949 is a deficient number, since it is larger than the sum of its proper divisors (5548297411).

25463029949 is a wasteful number, since it uses less digits than its factorization.

25463029949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97977 (or 97958 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 25463029949 in words is "twenty-five billion, four hundred sixty-three million, twenty-nine thousand, nine hundred forty-nine".