1252785225990 has 16 divisors (see below), whose sum is σ = 3006684542448. Its totient is φ = 334076060256.

The previous prime is 1252785225983. The next prime is 1252785226001. The reversal of 1252785225990 is 995225872521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252785225990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20879753737 + ... + 20879753796.

It is an arithmetic number, because the mean of its divisors is an integer number (187917783903).

Almost surely, 2^{1252785225990} is an apocalyptic number.

1252785225990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252785225990 is an abundant number, since it is smaller than the sum of its proper divisors (1753899316458).

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

1252785225990 is a wasteful number, since it uses less digits than its factorization.

1252785225990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41759507543.

The product of its (nonzero) digits is 9072000, while the sum is 57.

The spelling of 1252785225990 in words is "one trillion, two hundred fifty-two billion, seven hundred eighty-five million, two hundred twenty-five thousand, nine hundred ninety".