1253602240 has 56 divisors (see below), whose sum is σ = 3256525872. Its totient is φ = 455854080.

The previous prime is 1253602213. The next prime is 1253602241. The reversal of 1253602240 is 422063521.

It is a super-2 number, since 2×1253602240² = 3143037152266035200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253602241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174549 + ... + 181588.

Almost surely, 2^1253602240 is an apocalyptic number.

1253602240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253602240 is an abundant number, since it is smaller than the sum of its proper divisors (2002923632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253602240 is a wasteful number, since it uses less digits than its factorization.

1253602240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356165 (or 356155 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1253602240 is about 35406.2457766988. The cubic root of 1253602240 is about 1078.2511247140.

Adding to 1253602240 its reverse (422063521), we get a palindrome (1675665761).

The spelling of 1253602240 in words is "one billion, two hundred fifty-three million, six hundred two thousand, two hundred forty".