1252310545 has 16 divisors (see below), whose sum is σ = 1526418000. Its totient is φ = 986185728.

The previous prime is 1252310537. The next prime is 1252310597. The reversal of 1252310545 is 5450132521.

It is a Cunningham number, because it is equal to 35388²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 43983424 + 1208327121 = 6632^2 + 34761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252310545 - 2³ = 1252310537 is a prime.

It is a super-2 number, since 2×1252310545² = 3136563402236394050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95761 + ... + 108049.

It is an arithmetic number, because the mean of its divisors is an integer number (95401125).

Almost surely, 2^1252310545 is an apocalyptic number.

It is an amenable number.

1252310545 is a deficient number, since it is larger than the sum of its proper divisors (274107455).

1252310545 is a wasteful number, since it uses less digits than its factorization.

1252310545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1252310545 is about 35388.0000141291. Note that the first 4 decimals coincide. The cubic root of 1252310545 is about 1077.8806589260.

The spelling of 1252310545 in words is "one billion, two hundred fifty-two million, three hundred ten thousand, five hundred forty-five".