125515401010 has 8 divisors (see below), whose sum is σ = 225927721836. Its totient is φ = 50206160400.

The previous prime is 125515400999. The next prime is 125515401047. The reversal of 125515401010 is 10104515521.

It can be written as a sum of positive squares in 2 ways, for example, as 120580479009 + 4934922001 = 347247^2 + 70249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×125515401010² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6275770041 + ... + 6275770060.

Almost surely, 2^125515401010 is an apocalyptic number.

125515401010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125515401010 is a deficient number, since it is larger than the sum of its proper divisors (100412320826).

125515401010 is a wasteful number, since it uses less digits than its factorization.

125515401010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551540108.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 125515401010 its reverse (10104515521), we get a palindrome (135619916531).

The spelling of 125515401010 in words is "one hundred twenty-five billion, five hundred fifteen million, four hundred one thousand, ten".