1252020770 has 256 divisors, whose sum is σ = 3309465600. Its totient is φ = 328043520.

The previous prime is 1252020739. The next prime is 1252020779. The reversal of 1252020770 is 770202521.

It is a super-2 number, since 2×1252020770² = 3135112017022785800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1252020779) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5515397 + ... + 5515623.

It is an arithmetic number, because the mean of its divisors is an integer number (12927600).

Almost surely, 2^1252020770 is an apocalyptic number.

1252020770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252020770 is an abundant number, since it is smaller than the sum of its proper divisors (2057444830).

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

1252020770 is a wasteful number, since it uses less digits than its factorization.

1252020770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 1252020770 is about 35383.9055221438. The cubic root of 1252020770 is about 1077.7975147561.

The spelling of 1252020770 in words is "one billion, two hundred fifty-two million, twenty thousand, seven hundred seventy".