25123565039 has 48 divisors (see below), whose sum is σ = 28185252480. Its totient is φ = 22365450240.

The previous prime is 25123565023. The next prime is 25123565057. The reversal of 25123565039 is 93056532152.

It is a happy number.

It is not a de Polignac number, because 25123565039 - 2⁴ = 25123565023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25123564987 and 25123565005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123565539) 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, 109709777 + ... + 109710005.

It is an arithmetic number, because the mean of its divisors is an integer number (587192760).

Almost surely, 2^25123565039 is an apocalyptic number.

25123565039 is a deficient number, since it is larger than the sum of its proper divisors (3061687441).

25123565039 is a wasteful number, since it uses less digits than its factorization.

25123565039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 25123565039 in words is "twenty-five billion, one hundred twenty-three million, five hundred sixty-five thousand, thirty-nine".