25487951229 has 48 divisors (see below), whose sum is σ = 39988201344. Its totient is φ = 15550704000.

The previous prime is 25487951221. The next prime is 25487951303. The reversal of 25487951229 is 92215978452.

25487951229 is a `hidden beast` number, since 2 + 54 + 8 + 79 + 512 + 2 + 9 = 666.

It is not a de Polignac number, because 25487951229 - 2³ = 25487951221 is a prime.

It is a super-2 number, since 2×25487951229² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25487951221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11959494 + ... + 11961624.

It is an arithmetic number, because the mean of its divisors is an integer number (833087528).

Almost surely, 2^25487951229 is an apocalyptic number.

It is an amenable number.

25487951229 is a deficient number, since it is larger than the sum of its proper divisors (14500250115).

25487951229 is a wasteful number, since it uses less digits than its factorization.

25487951229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978 (or 2975 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 25487951229 in words is "twenty-five billion, four hundred eighty-seven million, nine hundred fifty-one thousand, two hundred twenty-nine".