215101025 has 12 divisors (see below), whose sum is σ = 266910000. Its totient is φ = 171961680.

The previous prime is 215100979. The next prime is 215101027. The reversal of 215101025 is 520101512.

It is not a de Polignac number, because 215101025 - 2¹⁴ = 215084641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215100994 and 215101012.

It is not an unprimeable number, because it can be changed into a prime (215101027) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 59726 + ... + 63224.

It is an arithmetic number, because the mean of its divisors is an integer number (22242500).

Almost surely, 2^215101025 is an apocalyptic number.

215101025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215101025 is a deficient number, since it is larger than the sum of its proper divisors (51808975).

215101025 is a wasteful number, since it uses less digits than its factorization.

215101025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968 (or 5963 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 215101025 is about 14666.3228179391. The cubic root of 215101025 is about 599.1664582907.

Adding to 215101025 its reverse (520101512), we get a palindrome (735202537).

The spelling of 215101025 in words is "two hundred fifteen million, one hundred one thousand, twenty-five".