1252633601 has 4 divisors (see below), whose sum is σ = 1255623600. Its totient is φ = 1249643604.

The previous prime is 1252633583. The next prime is 1252633619. The reversal of 1252633601 is 1063362521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1063362521 = 13 ⋅81797117.

It is an interprime number because it is at equal distance from previous prime (1252633583) and next prime (1252633619).

It is a cyclic number.

It is not a de Polignac number, because 1252633601 - 2¹⁸ = 1252371457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252633621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1494371 + ... + 1495208.

It is an arithmetic number, because the mean of its divisors is an integer number (313905900).

Almost surely, 2^1252633601 is an apocalyptic number.

It is an amenable number.

1252633601 is a deficient number, since it is larger than the sum of its proper divisors (2989999).

1252633601 is an equidigital number, since it uses as much as digits as its factorization.

1252633601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989998.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1252633601 is about 35392.5642049287. The cubic root of 1252633601 is about 1077.9733371830.

The spelling of 1252633601 in words is "one billion, two hundred fifty-two million, six hundred thirty-three thousand, six hundred one".