1252377290 has 16 divisors (see below), whose sum is σ = 2254923360. Its totient is φ = 500807760.

The previous prime is 1252377281. The next prime is 1252377293. The reversal of 1252377290 is 927732521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1252377293) 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, 23381 + ... + 55239.

It is an arithmetic number, because the mean of its divisors is an integer number (140932710).

Almost surely, 2^1252377290 is an apocalyptic number.

1252377290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252377290 is a deficient number, since it is larger than the sum of its proper divisors (1002546070).

1252377290 is a wasteful number, since it uses less digits than its factorization.

1252377290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35797.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1252377290 is about 35388.9430472287. The cubic root of 1252377290 is about 1077.8998080279.

The spelling of 1252377290 in words is "one billion, two hundred fifty-two million, three hundred seventy-seven thousand, two hundred ninety".