919767312025 has 27 divisors (see below), whose sum is σ = 1160526784063. Its totient is φ = 723119930000.

The previous prime is 919767312017. The next prime is 919767312029. The reversal of 919767312025 is 520213767919.

The square root of 919767312025 is 959045.

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., 331116232329 + 588651079696 = 575427^2 + 767236^2 .

It is not a de Polignac number, because 919767312025 - 2³ = 919767312017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919767312029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 282916650 + ... + 282919900.

Almost surely, 2^919767312025 is an apocalyptic number.

919767312025 is the 959045-th square number.

919767312025 is the 479523-rd centered octagonal number.

It is an amenable number.

919767312025 is a deficient number, since it is larger than the sum of its proper divisors (240759472038).

919767312025 is an frugal number, since it uses more digits than its factorization.

919767312025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 919767312025 in words is "nine hundred nineteen billion, seven hundred sixty-seven million, three hundred twelve thousand, twenty-five".