772814925 has 30 divisors (see below), whose sum is σ = 1431524138. Its totient is φ = 412166880.

The previous prime is 772814921. The next prime is 772814929. The reversal of 772814925 is 529418277.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (772814921) and next prime (772814929).

It can be written as a sum of positive squares in 3 ways, for example, as 18818244 + 753996681 = 4338^2 + 27459^2 .

It is not a de Polignac number, because 772814925 - 2² = 772814921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772814921) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 188794 + ... + 192843.

Almost surely, 2^772814925 is an apocalyptic number.

772814925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

772814925 is a deficient number, since it is larger than the sum of its proper divisors (658709213).

772814925 is a wasteful number, since it uses less digits than its factorization.

772814925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381659 (or 381645 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 772814925 is about 27799.5490071332. The cubic root of 772814925 is about 917.6811977706.

The spelling of 772814925 in words is "seven hundred seventy-two million, eight hundred fourteen thousand, nine hundred twenty-five".