1225202510 has 64 divisors (see below), whose sum is σ = 2569881600. Its totient is φ = 411910272.

The previous prime is 1225202471. The next prime is 1225202513. The reversal of 1225202510 is 152025221.

It is a happy number.

It is a super-2 number, since 2×1225202510² = 3002242381020600200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225202513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785111 + ... + 786669.

It is an arithmetic number, because the mean of its divisors is an integer number (40154400).

Almost surely, 2^1225202510 is an apocalyptic number.

1225202510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225202510 is an abundant number, since it is smaller than the sum of its proper divisors (1344679090).

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

1225202510 is a wasteful number, since it uses less digits than its factorization.

1225202510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1225202510 is about 35002.8928804463. The cubic root of 1225202510 is about 1070.0464387217.

Adding to 1225202510 its reverse (152025221), we get a palindrome (1377227731).

The spelling of 1225202510 in words is "one billion, two hundred twenty-five million, two hundred two thousand, five hundred ten".