25103455553 has 16 divisors (see below), whose sum is σ = 27565684992. Its totient is φ = 22671642000.

The previous prime is 25103455543. The next prime is 25103455561. The reversal of 25103455553 is 35555430152.

It is a cyclic number.

It is not a de Polignac number, because 25103455553 - 2⁴ = 25103455537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25103455543) 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, 1297118 + ... + 1316328.

It is an arithmetic number, because the mean of its divisors is an integer number (1722855312).

Almost surely, 2^25103455553 is an apocalyptic number.

It is an amenable number.

25103455553 is a deficient number, since it is larger than the sum of its proper divisors (2462229439).

25103455553 is a wasteful number, since it uses less digits than its factorization.

25103455553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19996.

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 25103455553 in words is "twenty-five billion, one hundred three million, four hundred fifty-five thousand, five hundred fifty-three".