7612163770225 has 81 divisors (see below), whose sum is σ = 11666559098883. Its totient is φ = 4911664719360.

The previous prime is 7612163770219. The next prime is 7612163770243. The reversal of 7612163770225 is 5220773612167.

The square root of 7612163770225 is 2759015.

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

It can be written as a sum of positive squares in 13 ways, for example, as 4611674645361 + 3000489124864 = 2147481^2 + 1732192^2 .

It is not a de Polignac number, because 7612163770225 - 2⁷ = 7612163770097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1641611607 + ... + 1641616243.

Almost surely, 2^{7612163770225} is an apocalyptic number.

7612163770225 is the 2759015-th square number.

7612163770225 is the 1379508-th centered octagonal number.

It is an amenable number.

7612163770225 is a deficient number, since it is larger than the sum of its proper divisors (4054395328658).

7612163770225 is an frugal number, since it uses more digits than its factorization.

7612163770225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332 (or 4666 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

Multiplying 7612163770225 by its sum of digits (49), we get a square (372996024741025 = 19313105²).

7612163770225 divided by its sum of digits (49) gives a square (155350281025 = 394145²).

The spelling of 7612163770225 in words is "seven trillion, six hundred twelve billion, one hundred sixty-three million, seven hundred seventy thousand, two hundred twenty-five".