1025402155225 has 24 divisors (see below), whose sum is σ = 1454200050240. Its totient is φ = 702620627520.

The previous prime is 1025402155171. The next prime is 1025402155247. The reversal of 1025402155225 is 5225512045201.

It is not a de Polignac number, because 1025402155225 - 2¹⁵ = 1025402122457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1893535 + ... + 2374084.

It is an arithmetic number, because the mean of its divisors is an integer number (60591668760).

Almost surely, 2^{1025402155225} is an apocalyptic number.

It is an amenable number.

1025402155225 is a deficient number, since it is larger than the sum of its proper divisors (428797895015).

1025402155225 is a wasteful number, since it uses less digits than its factorization.

1025402155225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269009 (or 4269004 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 1025402155225 in words is "one trillion, twenty-five billion, four hundred two million, one hundred fifty-five thousand, two hundred twenty-five".