1252151525 has 6 divisors (see below), whose sum is σ = 1552667922. Its totient is φ = 1001721200.

The previous prime is 1252151491. The next prime is 1252151569. The reversal of 1252151525 is 5251512521.

It can be written as a sum of positive squares in 3 ways, for example, as 45144961 + 1207006564 = 6719^2 + 34742^2 .

It is not a de Polignac number, because 1252151525 - 2¹⁸ = 1251889381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25043006 + ... + 25043055.

It is an arithmetic number, because the mean of its divisors is an integer number (258777987).

Almost surely, 2^1252151525 is an apocalyptic number.

It is an amenable number.

1252151525 is a deficient number, since it is larger than the sum of its proper divisors (300516397).

1252151525 is an equidigital number, since it uses as much as digits as its factorization.

1252151525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50086071 (or 50086066 counting only the distinct ones).

The product of its digits is 5000, while the sum is 29.

The square root of 1252151525 is about 35385.7531359727. The cubic root of 1252151525 is about 1077.8350334384.

It can be divided in two parts, 12521 and 51525, that added together give a palindrome (64046).

The spelling of 1252151525 in words is "one billion, two hundred fifty-two million, one hundred fifty-one thousand, five hundred twenty-five".