25156242541 has 16 divisors (see below), whose sum is σ = 27278830080. Its totient is φ = 23107897600.

The previous prime is 25156242523. The next prime is 25156242563. The reversal of 25156242541 is 14524265152.

It is a cyclic number.

It is not a de Polignac number, because 25156242541 - 2⁹ = 25156242029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25156242541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25156242581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242991 + ... + 330691.

It is an arithmetic number, because the mean of its divisors is an integer number (1704926880).

Almost surely, 2^25156242541 is an apocalyptic number.

It is an amenable number.

25156242541 is a deficient number, since it is larger than the sum of its proper divisors (2122587539).

25156242541 is a wasteful number, since it uses less digits than its factorization.

25156242541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88124.

The product of its digits is 96000, while the sum is 37.

The spelling of 25156242541 in words is "twenty-five billion, one hundred fifty-six million, two hundred forty-two thousand, five hundred forty-one".