25954139057 has 12 divisors (see below), whose sum is σ = 32603547648. Its totient is φ = 20224003800.

The previous prime is 25954139053. The next prime is 25954139059. The reversal of 25954139057 is 75093145952.

It is not a de Polignac number, because 25954139057 - 2² = 25954139053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25954138996 and 25954139014.

It is not an unprimeable number, because it can be changed into a prime (25954139053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15320369 + ... + 15322062.

It is an arithmetic number, because the mean of its divisors is an integer number (2716962304).

Almost surely, 2^25954139057 is an apocalyptic number.

It is an amenable number.

25954139057 is a deficient number, since it is larger than the sum of its proper divisors (6649408591).

25954139057 is a wasteful number, since it uses less digits than its factorization.

25954139057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30642460 (or 30642449 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 25954139057 in words is "twenty-five billion, nine hundred fifty-four million, one hundred thirty-nine thousand, fifty-seven".