381263026225 has 9 divisors (see below), whose sum is σ = 472769980833. Its totient is φ = 305007951120.

The previous prime is 381263026219. The next prime is 381263026247. The reversal of 381263026225 is 522620362183.

The square root of 381263026225 is 617465.

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 63049703409 + 318213322816 = 251097^2 + 564104^2 .

It is not a de Polignac number, because 381263026225 - 2³ = 381263026217 is a prime.

It is a super-2 number, since 2×381263026225² (a number of 24 digits) contains 22 as substring.

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, 3025579 + ... + 3149071.

Almost surely, 2^381263026225 is an apocalyptic number.

381263026225 is the 617465-th square number.

381263026225 is the 308733-rd centered octagonal number.

It is an amenable number.

381263026225 is a deficient number, since it is larger than the sum of its proper divisors (91506954608).

381263026225 is an frugal number, since it uses more digits than its factorization.

381263026225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246996 (or 123498 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 381263026225 in words is "three hundred eighty-one billion, two hundred sixty-three million, twenty-six thousand, two hundred twenty-five".