1252603261 has 8 divisors (see below), whose sum is σ = 1541665664. Its totient is φ = 991070640.

The previous prime is 1252603243. The next prime is 1252603279. The reversal of 1252603261 is 1623062521.

It is an interprime number because it is at equal distance from previous prime (1252603243) and next prime (1252603279).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252603261 - 2¹⁷ = 1252472189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252603211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6882345 + ... + 6882526.

It is an arithmetic number, because the mean of its divisors is an integer number (192708208).

Almost surely, 2^1252603261 is an apocalyptic number.

It is an amenable number.

1252603261 is a deficient number, since it is larger than the sum of its proper divisors (289062403).

1252603261 is a wasteful number, since it uses less digits than its factorization.

1252603261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13764891.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1252603261 is about 35392.1355812276. The cubic root of 1252603261 is about 1077.9646339264.

Adding to 1252603261 its reverse (1623062521), we get a palindrome (2875665782).

The spelling of 1252603261 in words is "one billion, two hundred fifty-two million, six hundred three thousand, two hundred sixty-one".