773951265025 has 9 divisors (see below), whose sum is σ = 959705023081. Its totient is φ = 619157493040.

The previous prime is 773951265013. The next prime is 773951265041. The reversal of 773951265025 is 520562159377.

The square root of 773951265025 is 879745.

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

It can be written as a sum of positive squares in 4 ways, for example, as 162777550849 + 611173714176 = 403457^2 + 781776^2 .

It is not a de Polignac number, because 773951265025 - 2⁵ = 773951264993 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, 4310751 + ... + 4486699.

Almost surely, 2^773951265025 is an apocalyptic number.

773951265025 is the 879745-th square number.

773951265025 is the 439873-rd centered octagonal number.

It is an amenable number.

773951265025 is a deficient number, since it is larger than the sum of its proper divisors (185753758056).

773951265025 is an frugal number, since it uses more digits than its factorization.

773951265025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351908 (or 175954 counting only the distinct ones).

The product of its (nonzero) digits is 3969000, while the sum is 52.

The spelling of 773951265025 in words is "seven hundred seventy-three billion, nine hundred fifty-one million, two hundred sixty-five thousand, twenty-five".