25021001055 has 8 divisors (see below), whose sum is σ = 40033601712. Its totient is φ = 13344533888.

The previous prime is 25021001011. The next prime is 25021001087. The reversal of 25021001055 is 55010012052.

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

It is a cyclic number.

It is not a de Polignac number, because 25021001055 - 2¹⁷ = 25020869983 is a prime.

It is a super-2 number, since 2×25021001055² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834033354 + ... + 834033383.

It is an arithmetic number, because the mean of its divisors is an integer number (5004200214).

Almost surely, 2^25021001055 is an apocalyptic number.

25021001055 is a deficient number, since it is larger than the sum of its proper divisors (15012600657).

25021001055 is a wasteful number, since it uses less digits than its factorization.

25021001055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668066745.

The product of its (nonzero) digits is 500, while the sum is 21.

The spelling of 25021001055 in words is "twenty-five billion, twenty-one million, one thousand, fifty-five".