25072556155 has 8 divisors (see below), whose sum is σ = 30115700784. Its totient is φ = 20038956000.

The previous prime is 25072556153. The next prime is 25072556167. The reversal of 25072556155 is 55165527052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25072556155 - 2¹ = 25072556153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25072556153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380336 + ... + 2390845.

It is an arithmetic number, because the mean of its divisors is an integer number (3764462598).

Almost surely, 2^25072556155 is an apocalyptic number.

25072556155 is a deficient number, since it is larger than the sum of its proper divisors (5043144629).

25072556155 is a wasteful number, since it uses less digits than its factorization.

25072556155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772237.

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 25072556155 in words is "twenty-five billion, seventy-two million, five hundred fifty-six thousand, one hundred fifty-five".