25213523550155 has 16 divisors (see below), whose sum is σ = 30280388785920. Its totient is φ = 20154715961472.

The previous prime is 25213523550097. The next prime is 25213523550179. The reversal of 25213523550155 is 55105532531252.

It is a cyclic number.

It is not a de Polignac number, because 25213523550155 - 2¹² = 25213523546059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49238981 + ... + 49748409.

It is an arithmetic number, because the mean of its divisors is an integer number (1892524299120).

Almost surely, 2^{25213523550155} is an apocalyptic number.

25213523550155 is a deficient number, since it is larger than the sum of its proper divisors (5066865235765).

25213523550155 is a wasteful number, since it uses less digits than its factorization.

25213523550155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517318.

The product of its (nonzero) digits is 1125000, while the sum is 44.

The spelling of 25213523550155 in words is "twenty-five trillion, two hundred thirteen billion, five hundred twenty-three million, five hundred fifty thousand, one hundred fifty-five".