1904496601225 has 9 divisors (see below), whose sum is σ = 2361584341767. Its totient is φ = 1523591760840.

The previous prime is 1904496601213. The next prime is 1904496601291. The reversal of 1904496601225 is 5221066944091.

It is a happy number.

The square root of 1904496601225 is 1380035.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 685618776441 + 1218877824784 = 828021^2 + 1104028^2 .

It is not a de Polignac number, because 1904496601225 - 2¹³ = 1904496593033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6762172 + ... + 7038178.

Almost surely, 2^{1904496601225} is an apocalyptic number.

1904496601225 is the 1380035-th square number.

1904496601225 is the 690018-th centered octagonal number.

It is an amenable number.

1904496601225 is a deficient number, since it is larger than the sum of its proper divisors (457087740542).

1904496601225 is an frugal number, since it uses more digits than its factorization.

1904496601225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552024 (or 276012 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 1904496601225 by its sum of digits (49), we get a square (93320333460025 = 9660245²).

The spelling of 1904496601225 in words is "one trillion, nine hundred four billion, four hundred ninety-six million, six hundred one thousand, two hundred twenty-five".